nilson



Feb. 3, 1931. F. w. NILSON I 1,790,831

HOOK

Filed March 18, 1929 \NVENTOR www ; 35 legs 11. and 12. Slidably sec Patented Feb 3, 1931 UN-ITED ATE NT F 7 FRED w. mLsoN, or

wonons'rnn; nnssnonusnrrs, ASSIGNOR or ONE-HALF To NILS unison; orwononsrnn; MASSACHUSETTS HOOK It is an object ofthe present invention to provide ahook whichmay be used adv'an-,

tageously on anti-skid chains for automobiles and for similar purposesin which ahookis required to withstand adverseconditions1 Another object isto provide a'hook which cannot be opened and releasedby pressure of ice and snow nor by the pinching orrubbing of an automobile tire upon it. I i This invention also has for an objectth provision of a hookwhich readily attached and detachedby a simple sliding operation of the locking tongue. V

" Another Oble'ct' is n' rea' ethe efiective length ofthe locking tongueiofja-hook of the character described in asim'ple and effective o manner'whereby the strength and holding power are greatIyiincreasedQ- V These and other objects will'be apparent to those skilled in the art as the detailed description of the invention proceeds.

In. order to Inore completely understand the nature of the invention. attention is dimated to the accompanying drawingsin which: r

Fig. 1 is aj plan viewof one embodiment i 0f the invention.

7 f -Fig. 2 is aside-view ,otFig. 1. 1 H Fig. 3 isaplan view of a modification.

Fig.;4 is a side view ofFig. 3. In Figs. 1 and 2 a hook-1O is shownhaving I ured, over the legs 11 and 12 is a lockingtongue orkeeper 13 which is capable of being moved over the legs 11 and 12 from position A, shownin solid lines, to position B, shown .in dottedf'lines.

40 The tongue. 13 is preferably made of tem pered spring steel and is et-such shape and size that it presents a friction fitover the legs #11 and12- The tightnessrofthe friction fit -is suchzthat the. tongue willr remainin any position of its movement until iti'simanually moved back into its original position. ,7

L The curvature 14: of the hook can be such that the tongue may slide partly overthe curvedpo'rtion and remain fixed in position.

sQThiS Construction has the 'eflect of increasing 1 -may be left straight.

-.To -attach the hook v I 7 chain .or to some other'object, the tongue is :slidably movedto' the position 'A, in which "position 'the link may readilyislip' between "the tongue and the hook. The tongue snaps Application filed na'rch' 18-, 1929. Serial to; 347,908.

thejfriction between the tongue and the hook and tends to hold the tongue more securely whenit is moved over the curve. r p The curvature 14 of the hook alsotendsto direct the'extremity of the hook downward, over an .element 15 to which the hook isattached. The element 15iis'a diagrammatic representation of one side of a link or other objecttoj which the hook may be attached.

To increase the friction between the tongue and-the hook, the bridge portion 16 ofv the tongue may be curved slightlylupwardior downward and shaped to exert a spring pressure on the legs lland 12 of the hook.

This-spring pressure maybe directed out- 'wardly against-the insides of thelegs 11 and 12 or it maybe directed inwardly against the outside of the legs.

V I Also, to further. increase the friction between the tongue andthe hook, the legs 11 and 12 may diverge slightly so that they i are spread farther apart toward the hooked end of the hook. If desired, the legs may convergetoward the hooked end to produce the: Y

same efi'ect. -Either of; these expedientslmay housed in combination with spring efiect of tween .the. hook andthe tongue is made suflioiently great the bridge portion dithe hook need not v be curved and the legsof I to link in 'another upward due to its spring .action when the link-haspassed it, so that 'in order toremove the link againit'is necessary to press down wardly on thejtongue. After the hook has i been attached in this manner'the tongue 13 is moved manually toposition B; Whenthe tongue is in this position the extremity extends over the element to which is attached so that now the element oannotbe removed by downward pressure on the tongue. Such pressure would only serve to move the-tongue m r cl ly he emen and' ,l .1o1dit still and to the pressure of ice and snow. Such adversewconditions, instead of loosening ther connection, serve to make the connect on more secure as explained above. To release the connectioirit is only necessary-to slide the tongue to position-A; and: themeXer-t:

from position downward pressure on the tongue. Thus, it

is seen that a very convenient and serviceable hook can be made in an extremely simple manner.

Figs. 3andel, it will'be noticed that thetongue here shown is identical lwith thatshownin.

Figs. 1 and 2 except that the tongue is vprovided' withoa. rearwardly extending; spring;

catch- 17 formed integrally with the tongue, and whichis adapted, when the tongue, is moved into holding position, to snap'into a notch 18 in oneof the legs of the hook. The object of this, spring, catch is to hold the tongue more securely. It is readily seen that the tongue. cannot. be vreleased [until catch 17 is, lifted .out,ofInotch 18, which can, ,be-don.e, for example, by means ofa screw driveror other simple tool and the. tongue ,can then be movedfb'ackwardly and'depressed as: previously described in, connection. with. Figs; ,1 and'2i j i y The modificationshown in Figs.-, 3, and 4 mayor may not be provided with the friction means described heretofore.v No friction means is required with this modification. but under some, circumstances it may be desirable, as when a doubly secure connection is wanted.

The spring catch 17 and thecorresponding notch 18 on, the hook can be placed on, either ,oneor. both ofthe. legs otthe hookraindiit may be placed, in any convenient position around the, leg. It is, desirable, oi course, .to have the catch in thatposition which islmost easily and readily accessible, so. that. the tongue may be more easilyreleasedi I In both embodiments shown the portion of the legsll, and 12 of the hook on which the tongue bears, may be milled or' otherwise roughened to increase 7 the, Y friction between the elements. Other arrangements for 1ncreasmg thetraction between the elements which, comewithinth'e scope of the present invention will be apparent tojone TSk11lBCl.l11

the art to which this invention pertains,"

Whileljhave shown and described certain preferred embodiments of-myinvention, I

do not wish to be limited thereto sincethe invention as defined in'the appended'claims can be embodied in a plurality of forms locking tongue, said lochng tongue being slidable on the hook from one positionto a second position, said locking tongue being provided with means for retaining it in'said second position, said means comprising a spring catch formed integrally with said tongue and? a notch in the hook retaining said spring catch.

25A" hook for 'cross chains of a non-skid automobile chain, said hook-having a resilient lockingtongue, .said locking tongue be ing slidable on the hook from one position to;a second position, said locking tongue being provided with retaining means for re-- tainingit in said'second position, said retain- Coming nowto the modification shown in.

ing means comprisingfriction means and a spring catch formed integrally with said tongueand a notchin said hook retaining said spring catch.

to a second position, said tonguebeing adapt ed to be retained inpsaid secondpositionby retaining means, said retaining means'com-Q prising convergence of-the sides of that portion of .the hook on which the locking tongue is mounted: and a. spring catch 'formedintegrallywithsaid tongue and a-notch in said hook cooperating withsaid catch. 4. A hook for cross'chainso of a non-skid automobile chain, said hook having a resilient'locking'tongue oftempe'redspring steel, saidlockingitongiie'beingslidable on the hook fromone'position-to a second position, said tongue being, adapted to be retained in said second position by friction means, said friction means comprisingspring pressureexerted bysaidtongue upon-thatportion ofthe b'odyofthe hook on which the hook is mount- 'ed and additional means for retaining said hook in said second position comprising a spring catch formed integrally with said looking tonguea-nd a notch in said hook, cooperating with said catch. i 5. A, hook for cross chains-of 'a non-skid automobile chain, said hookhaving a iresilient lockingtongue of tempered spring steel, sa-id' locking tongue being slidable on the hook from one position to a s'econd position,

said tongue adapted'to be retained in said second position by friction means, said friction means compris ng spring pressure exerted by-the tongueupon' the sides of the hook, said-sides convjerging slightly and with saidflocking tongue and a notch in said, hook cooperating with said spring catch.

6. A hook for cross chains of a non-skid tire chain, said hook being adapted to be attached to a link 'of'a side chain said hook being,v provided, with, a, keeper, id Jkeeper b'eing's'lidable on the hook from one position to a second position, said keeper being freely depressible Vwhen cin said first position to allow insertion or withdrawal of said link in said side chain and said keeper overlappin the attached side of said link when in sai second position whereby said overlapping by 7 the keeper prevents depression of said keeper.

7. A hook for cross chains of a non-skid tire chain, said hook being adapted to be attached to a link of a side chain, said hook being provided with a keeper, said keeper being slidable on the hook from one position to a second position, said keeper being freely depressible when in said first position to allow insertion or withdrawal of said link in said side chain and said keeper overlappin the attached side of said link when insai second position whereby said overlapping by the keeper prevents depression of said keeper and means comprising a spring catch for retaining said keeper in said second position.

In witness whereof, I hereunto subscribe my name this 9th day of March, 1929.

Y FRED W. NILSON. 

